Metcal Fume Extraction Unit HEPA 13 Gas Filter Pre Filter BVX NOZC, BVX NOZR, BVX ARML BVX 250 KIT Pricefy CAT III 1000 V IP Diameter:3 4" CAT III 1000 V IP rating IP 67 Power Three AA batteries Battery life 800 hours General Specifications Display Bar graph backlight Yes Yes Data storage Peak transient capture 250 μS Min Max Avg Yes Reading hold Yes Other features Relative readings (zero) Yes Battery type Three AA batteries Warranty and protection Safety rating CAT IV 600 V CAT III 1000 V Mine safety MSHA Approved External protection Rubber holster Drop test 10 feet drop test Dustproof waterproof Yes up to 10 pins for a common application) Remote Switch Included BVX NOZC circular nozzle